Improvement in hoisting apparatus



UNITED STATES PATENT OFFICE.

BARTON H. JENKS, OF BRIDESBURG, PENNSYLVANIA.

I'MPROVEMENT'IN HOISTING APPARATUS.

To all whom it may concern:

Be it known that I, BARTON H. JENKs, of Bridesburg, in the county of Philadelphia and State of Pennsylvania, have invented a new and Improved Hoisting Apparatus for Mines and other purposes; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, making a part of this specification, in which- Figure l is a side elevation of the improved apparatus. Fig. 2 is a vertical section of the same. Fig. 3 is a plan view, a portion of the elevating-carriage being broken away.

Similar letters of reference indicate correspondin g parts in the several `figures.

This invention relates to a new and improved hoisting apparatus, whichis particularly designed for use in coal and other mines for elevating the products thereof through the inclined passage-ways, and for preventing those lamentable accidents which frequently occur in mines in consequence of the parting of the ropes or chains during the operation of elevating heavy loads. y

To enable others skilled in the art to understand my invention, I will describe its construction and operation.

Inthe accompanying drawings, A represents an inclined passage-way leading from a horizontal gallery, B, to the surface of the' earth,

` or to an upper tier of galleries, and Crepresents a rail-track composed of two plain rails, a a, and two toothed rails, b b, which latter are arranged outside of the rails a a, and constructed with an overhan ging flange, as will be further mentioned hereinafter. These tracks are suitably secured down and tied upon the door of the inclined passage, so as to form a safe and substantial support for the carriage, u'pon which the cars D are elevated or lowered.

The carriage consists of a platform, E, which i is mounted upon four 'anged wheels, c c d' d,

that are of such sizes as to support the platform upon the` rails a, a in a horizontal plane, as shown in Figs. l and 2. The anged wheels 'are applied to axles e e', that have their end worm-screw, j, `which is on a longitudinal shaft, f. This shaft f carries a spur-wheel, la, which engages with a worm-screw, l, that is on a transverse shaft, F, which has its end bearin gs in the pendants g g. One end of the shaft F projects beyond the pendant g a short distance, and carries a grooved pulley, m, under which an endless rope or chain, G, passes.'

The flanged Vdrum-pulley n, which is located near the pulley m, and in the same vertical plane therewith, is intended for receiving over it the rope Gr and causing this rope toact with suflicient friction upon the grooved pulley m to turn its shaft F, and thus move the carriage either up or down the inclined passage.

The endless rope or chain G passes over a drum, H, at the highest'point of the inclined passage A, and also over a drum, I, at the lowest point of this passage. The drum H may be rotated by any convenient prime mqover.

It will be seen from the above description that comparatively little power will be re# carriage from moving of itself down the grade.V

There will be no undue strain brought upon the rope Gr, and even should thisI rope break during the hoisting of aheavy load the carriage will remain in a fixed position upon the track, for the reason that this carriage can only be moved by rotating the shaft F.

In order to provide against the accidental running of of the carriage-wheels, the uppermost pendants g carry small rollers, which are shown in dotted lines in Figs. 1 and 2, that project under the outer edges of the rack-rails b b, and hold. the carriage-wheels. down upon their track. The pendants of the smallest wheels d also serve to prevent any lateral thrust of the carriage.

By my invention I provide against the sudden descent of a loaded carriage should the hoisting-rope part. I also provide for keeping the carriage upon the inclined track and preventing it from tilting backward during the raising or lowering of a load.

I do not confine my invention exclusively for use in mines, for, While it is found very valuable for th-is purpose, it may also be applied to carriages moving upon inclined planes in factories, Warehouses, and other places Where heavy loads require to be raised or lowered upon very steep grades.

rlhe principle of my invention is also applicable to perpendicular shafts of coal-mines, factories, Warehouses, &c.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is- A l. Providing for raising or lowering` a car riage which is mounted upon an inclined track or perpendicular shaft by means of ropes or riage down upon the inclined track and pre- Venting lateral displacement.

BARTON H. JENKS.

Witnesses WILLIAM DoBsoN, EDWARD ONYX. 

